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Asus P552W Manual

Level 3,4
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華
碩
電
腦
華
碩
電
腦
GTC ■ Service Manual
P552W Level 3,4

Trouble Shooting Guide

Ver 1.0
1

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Summary of Contents for Asus P552W

  • Page 1: Trouble Shooting Guide

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual P552W Level 3,4 Trouble Shooting Guide Ver 1.0...

  • Page 2: Table Of Contents

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual CONTENT 1. OVERVIEW 1.1 System Block Diagram ...……………………..……………... 5 1.2 power-on sequence ………………………………………...… 6 1.2.1 Start-up Timing Diagram …………………...……………. 6 1.2.2 Start-up Timing Parameters …………………………...…. 7 1.2.3 Power-on Sequence Summary ………………...…………. 7 1.2.4 POWER UP RESET TIMING …………………………..
  • Page 3 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 2.3.10 SDRAM Test ………………………………..………… 30 2.3.11 Audio Test …………………………………………….. 30 2.3.12 Touch Panel Defect ……………………………….… 35 3.RF Trouble Shooting 3.1 Equipment ……………………………………..…………... 36 3.1.1 Software requirements ..........36 3.1.2 Hardware requirements ...........
  • Page 4 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Appendix 1. Bluetooth Debug Tool Operation ........101 2. WLAN Debug Tool Operation ........104 3. GPS Debug Tool Operation – GPSinformation_en..109 4. GPS Firmware Download Tool Operation – GPSDL..111 5.

  • Page 5: Overview

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 1. OVERVIEW 1.1 System Block Diagram...

  • Page 6: Power-On Sequence

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 1.2 power-on sequence 1.2.1 Start-up Timing Diagram...

  • Page 7: Start-Up Timing Parameters

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 1.2.2 Start-up Timing Parameters 1.2.3 Power-on Sequence Summary...

  • Page 8: Power Up Reset Timing

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual The baseband processor must write a logic 1 to a dedicated I2C watchdog register bit during the next 8 s period. This will move the DA9035 into the ACTIVE mode, and start the continuous watchdog monitoring circuit.

  • Page 9: Power Up Timing Specifications (1/2)

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 1.2.5 POWER UP TIMING SPECIFICATIONS (1/2) 1.2.6 POWER UP TIMING SPECIFICATIONS (2/2)

  • Page 10: Main Specification

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 1.3 Main Specification HSDPA 3.6Mbps, UMTS 2100 Networks EDGE/GPRS/GSM 900/1800/1900, Class 10 Microsoft Windows® Mobile™ 6.1 Professional Operating System Marvell Tavor 624MHz 256 MB Flash + 128MB SDRAM Memory Connectivity USB v1.1(FS), Bluetooth 2.0+EDR...

  • Page 11: Device Exterior Description

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 1.4 Device exterior description 1.4.1 FRONT SIDE FUNCTION POWER BUTTON FUNCTION LED CALL KEY AnyTime Launcher KEY JOY DIAL BUTTON OK KEY END KEY GPS PORT VOLUME BUTTON...

  • Page 12: Back Side

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 1.4.2 BACK SIDE FUNCTION SPEAKER 2M CAMERA BATTERY COVER TOUCH PEN HOLD KEY CAMERA KEY RESET BUTTON MiniUSB PORT...

  • Page 13: On Board Major Components Location

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 1.5 On Board Major Components Location 1.5.1 FRAON SIDE...

  • Page 14: Backt Side

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 1.5.2 BACKT SIDE...
  • Page 15 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual...

  • Page 16: Debugging Equipments

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 1.6 Debugging Equipments Oscilloscope Soldering Iron...
  • Page 17 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Power Supply Reheat fan...
  • Page 18 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Voltmeter...

  • Page 19: Baseband Trouble Shooting

    ASUS PDA phone GM2. The repair methodology provided in this manual is strictly for the GM2 model ONLY, trouble shooting methodology for the other ASUS designed PDA phone will not be included in this document. 2.2 Device Cannot Power On The most common reasons that will cause device to fail to power on is due to defect components or incorrect power-on sequence.
  • Page 20 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual B. VCC_BBAT= 2.9V If VCC_BBAT is < 2.9V, please examine chip U901 and the resistors/capacitors around it. Observe if there is any defect. C. nBATT_FAULT(R321) = 2.9V If incorrect voltage is observed, please examine any possible defect on U303, U304, U305, U306 and the surrounding components.

  • Page 21: Rtc Can't Power On Issue

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual in the range of 0.9~1.4V. If not, please examine if there is any defect on U901, U301 or the passive components on this two power domains. I. 26MHZ clock (26MHZ_SYS ) If 26MHz clock is not measured, please examine if there is any defect on OSC1801,C1802, U1802 and the surrounding components.

  • Page 22: Device Peripheral Trouble Shooting (Mmi Testing)

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual time),current is still not raising up. E. Measure the voltage described above from A~E, according to the experience the voltage level on PWR_EN and SYS_EN would be abnormal(about 1.~ V)。 If above items have been done, and the system still can’t power on.

  • Page 23: Vibrator Test

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual E. LCD_FCLK, LCD_LCLK, LCD_PCLK should have high-low transaction, check if there is any defect or open on componetR701, R702, R703. F. LCD_DATA_EN should be 2.9V The above signal could result in white screen, if LCD_PWR_EN/LCD_RESET# signal is abnormal, it means CPLD is NG.

  • Page 24: Microsd Test

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 2.3.5 MicroSD Test If the device is unable to read SD storage card, try to replace the device with new a sub-board and perform the test again. If the defect is still not solved, please follow the following debugging procedure: A.

  • Page 25: And Vga Camera Test

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Figure 1.4 Indication LED Circuit If it is the Keypad LED not functioning properly, please check if VCC_KB_LED=2.9V (on the keypad board) if not, then it is likely U1 is defective.
  • Page 26 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Figure 1.6 Camera power ● 3M_PWRDN=0V ● 3M_nRESET=1.8V ● Check if any of the components on figure 7 and figure 8 is defected. ● Check VSYNC、HSYNC、PCLK has the high-low transaction Figure 1.7 Camera Bus...

  • Page 27: Sim Test

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Figure 1.8 Camera Bus 2.3.8 SIM Test If unable to read SIM card scenario is observed, please try to replace device’s sub board first. If this still does not solve the problem, please examining the following: ●...

  • Page 28: Battery Test

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Figure 1.9 SIM Card Connector Circuit 2.3.9 Battery Test If the device is unable to charge the battery correctly or the incorrect battery reading is observed, please examining the following: Unable to charge the battery ●...
  • Page 29 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Figure 1.10 Charger IC Circuit Unable to read battery information: ● Verify if 1-WIRE sends out signal periodically. ● Verify if R1107 is still mounted properly ● Verify if 1.8V can be measured on V_LDO2 measured. If any of above signal is incorrect, please check if CPU(U301) or PMU (U901) is defective.

  • Page 30: Sdram Test

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 2.3.10 SDRAM Test It is rare to observe this type of defect, but if this does occur, it is likely that U601 is defective. Figure 1.12. SDRAM Circuit 2.3.11 Audio Test 2.3.11.1 Headset Defect Please check if there is any external damage to the headphone...
  • Page 31 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● Unable to detect headphone Verify if JACK_IN_DET is 1.8V when the headphone is unplugged. If not, please verify if there is any defect on components R1116, C1114, R1119. ●...
  • Page 32 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Figure 1.13 Headset mechanism 2.3.11.2 Speaker Defect Please verify if the speaker mounted on the case is contacting with on board speaker pin correctly. Otherwise, please follow the below debugging procedure: ●...
  • Page 33 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual A. Speaker Please verify if the speaker mounted on the case is contacting with on board speaker pin correctly. Otherwise, please follow the below debugging procedure: a. Speaker have no sound 1.
  • Page 34 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Figure 1.14. Class D Amp for speaker b. On-Board Microphone record fail If recording performance is not good，U1002 NG. If no recording signal measured, then check the related component1003,C1004,C1005,R1016,C1006,R1018,C1009,C1007.

  • Page 35: Touch Panel Defect

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Figure 1.16. Microphone Circuit B. Receiver no sound Check C1035,C1036,R1028,R1029,C1031,C1033,C1042,C1034.If these are all ok, check related balls of U901. Figure 1.17. Receiver Circuit 2.3.12 Touch Panel Defect ● Verify if touch panel’s FPC is connected properly onto the connector on the keypad board.

  • Page 36: Rf Trouble Shooting

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.RF Trouble Shooting 3.1 Equipment Requirements 3.1.1 Software requirements GSM/WCDMA RF calibration tool GSM/WCDMA RF performance test tool GSM/WCDMA debug tool WLAN test tool Bluetooth test tool GSP test tool 3.1.2 Hardware requirements RF adapter RF cable...

  • Page 37: Rf Block Diagram

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.2. RF Block Diagram 3.2.1 GSM block diagram...

  • Page 38: Wcdma Block Diagram

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.2.2 WCDMA block diagram...

  • Page 39: Bluetooth And Wlan Block Diagram

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.2.3 Bluetooth and WLAN block diagram...

  • Page 40: Gps Block Diagram

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.2.4 GPS block diagram 3.3. Procedures of RF Repair 3.3.1 GSM and WCDMA repair procedures The following flow chart shows repair’s procedures that comprise of calibration, pretest, and general repair processes. In the beginning of repair procedures, “production version”...
  • Page 41 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual...

  • Page 42: Bluetooth And Wlan Repair Procedure

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.3.2 Bluetooth and WLAN repair procedure The following flow chart shows BT (Bluetooth) and WLAN (Wireless local area network) repair’s procedures. Both BT and WLAN need debug tool to enforce module into test mode. The operation of debug tool is described in the appendix.

  • Page 43: Gps Repair Procedure

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.3.3 GPS repair procedure The following flow chart shows GPS repair’s procedures. General GPS debug is necessary if GPS conductive test is failed. There are three types of GPS debug methods in the general GPS debug stage, including GPS DC debug verifying DC power supply and reference clock, GPS firmware download installing firmware on GPS chip, and GPS RF debug checking defect component on the GPS RF path.

  • Page 44: General Gsm Debug

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.4. General GSM debug 3.4.1 GSM path and test points How RF signal is transmitted and received between components on GM2 PCB is explained in this section. It is important to realize RF transmission path (Tx) and receiving path (Rx) before starting out to repair defective PCB, because engineers need to choose proper test points which allow us to distinguish where the problem is.
  • Page 45 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual In GSM900 band, the RF signal from FEM (U1804) Pin3 and Pin4 is transmitted to Rx differential matching circuits and B6PLD (U1802) sequentially. The incoming RF signal is mixed directly down to digital I/Q signals by B6PLD (U1802) and transmit I/Q-sampling data to baseband.
  • Page 46 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual...
  • Page 47 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● GSM test points...

  • Page 48: Gsm Tx Debug

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.4.2. GSM Tx debug The flow chart of GSM Tx debug is shown below.
  • Page 49 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual The purpose of Tx debug process is to find out where the problem is on GSM Tx path. In other words, engineers can judge the defect component on RF path by using “RF Debug tool”. Debug tool enforces GM2 into test mode so that RF signal can be transmitted continuously.
  • Page 50 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual strength of each point must refer to a golden sample under the same measurement conditions. The results of measured RF signals on each test point are showed in the following descriptions. ●...
  • Page 51 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual <DCS1800> <PCS1900>...
  • Page 52 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● C1836/C1839 Check whether PA (U1803) operates normally or not. U1803 needs to be replaced if improper RF power, no power or lower power than that on the golden sample, is measured on C1836 and C1839. C1836 is the test point for GSM900 band.
  • Page 53 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual <DCS1800> <PCS1900>...
  • Page 54 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● C1806 Check whether FEM (U1804) operates normally or not. U1804 needs to be replaced if improper RF power, no power or lower power than that on the golden sample, is measured on C1806. C1806 is the test point for GSM900 band, DCS1800 and PCS1900 band.
  • Page 55 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual <DCS1800> <PCS1900>...
  • Page 56 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● R1833 Check whether RF Connector (CON1801) is good or not. ON1801 needs to be reworked if improper power, no power or lower power than that on the golden sample, is measured on R1833. The following figures, which sequentially indicate measurement result of GSM900, DCS1800 and PCS1900 on R1833, are examples of RF signal measurement on the spectrum analyzer.
  • Page 57 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual <DCS1800> <PCS1900>...

  • Page 58: Gsm Rx Debug

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.4.3 GSM Rx debug The flow chart of GSM Rx debug is shown below.
  • Page 59 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual The purpose of Rx debug process is to find out where the problem is on GSM Rx path. In other words, engineers can judge the defect component on RF path by using “RF Debug tool”.
  • Page 60 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual same measurement conditions. The results of measured RF signals on each test point are showed in the following descriptions. ● C1806 Check whether RF Connector (CON1801) is good or not. CON1801 needs to be reworked if improper power, no power or lower power than that on the golden sample, is measured on C1806.
  • Page 61 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual <GSM1800> <GSM1900>...
  • Page 62 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● C1831/C1821/C1810 Check whether FEM (U1804) operates normally or not. U1804 needs to be replaced if improper RF power, no power or lower power than that on the golden sample, is measured on C1831, C1821, and C1810.
  • Page 63 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual <GSM1800> <GSM1900>...

  • Page 64: General Wcdma Debug

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.5 General WCDMA debug 3.5.1. WCDMA path and test points GSM and WCDMA share the same RF circuits from the antenna to FEM (U1804). The choice of operation band, GSM or WCDMA, depends on band selection of FEM (U1804).
  • Page 65 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual...
  • Page 66 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● WCDMA test points...

  • Page 67: Wcdma Tx Debug

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.5.2 WCDMA Tx debug The flow chart of WCDMA Tx debug is shown below.
  • Page 68 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual The purpose of Tx debug process is to find out where the problem is on...
  • Page 69 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual WCDMA Tx path. In other words, engineers can judge the defect component on RF path by using “RF Debug tool”. Debug tool enforces GM2 into test mode so that RF signal can be transmitted continuously.
  • Page 70 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual the same measurement conditions. The results of measured RF signals on each test point are showed in the following descriptions. ● L1906 Check whether Transceiver PMB5701 (U1901) operates normally or not.
  • Page 71 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● C1921 Check whether SAW filter (U1904) is good or not. U1904 needs to be reworked if improper power, no power or lower power than that on the golden sample, is measured on C1921. The following figure is an example of C1921 signal measurement on the spectrum analyzer.
  • Page 72 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● R1913 Check whether Coupler (U1907) is good or not. U1907 needs to be reworked if improper power, no power or lower power than that on the golden sample, is measured on R1913. The following figure is an example of R1913 signal measurement on the spectrum analyzer.
  • Page 73 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● C1824 Check whether Duplexer (U1903) is good or not. U1903 needs to be reworked if improper power, no power or lower power than that on the golden sample, is measured on C1824. The following figure is an example of C1824 signal measurement on the spectrum analyzer.
  • Page 74 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● R1833 Check whether RF Connector (CON1801) is good or not. CON1801 needs to be reworked if improper power, no power or lower power than that on the golden sample, is measured on R1833. The following figure is an example of R1833 signal measurement on the spectrum analyzer.

  • Page 75: Wcdma Rx Debug

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.5.3 WCDMA Rx debug The flow chart of WCDMA Rx debug is shown below.
  • Page 76 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual The purpose of Rx debug process is to find out where the problem is on WCDMA Rx path. In other words, engineers can judge the defect component on RF path by using “RF Debug tool”. Debug tool enforces GM2 into test mode so that GM2 can keep receiving CW, continuous wave, from a signal generator.
  • Page 77 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual signal strength of each point must refer to a golden sample under the same measurement conditions. The results of measured RF signals on each test point are showed in the following escriptions. ●...
  • Page 78 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● C1824 Check whether FEM (U1804) operates normally or not. U1804 needs to be replaced if improper RF power, no power or lower power than that on the golden sample, is measured on C1824. The following figure is an example of C1824 signal measurement on the spectrum analyzer.
  • Page 79 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● L1911 Check whether LNA (U1911) and SAW filter (U1908) operate normally or not. Either U1911 or U1908 needs to be replaced if improper RF power, no power or lower power than that on the golden sample, is measured on L1911.

  • Page 80: General Bluetooth And Wlan Debug

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.6 General Bluetooth and WLAN debug 3.6.1 Bluetooth and WLAN path and test points Bluetooth and WLAN share the same RF circuits from the chip antenna (U1702) to combiner (U1706). ●...
  • Page 81 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● Bluetooth and WLAN test points...

  • Page 82: Bluetooth And Wlan Debug

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.6.2 Bluetooth and WLAN debug The flow chart of Bluetooth and WLAN debug is shown below. The purpose of Bluetooth and WLAN debug process is to find out where the problem is on Bluetooth and WLAN path.
  • Page 83 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual The detail steps of debug are listed as follows. a. Spectrum analyzer connects with a high impedance probe and then execute Bluetooth or WLAN debug tool on GM2. b.
  • Page 84 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● C1711 Check whether combiner (U1706) operates normally or not. U1706 needs to be replaced if improper RF power, no power or lower power than that on the golden sample, is measured on C1711. The following figure is an example of C1711 Bluetooth signal measurement on the spectrum analyzer.
  • Page 85 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● C1711 Check whether combiner (U1706) operates normally or not. U1706 needs to be replaced if improper RF power, no power or lower power than that on the golden sample, is measured on C1711. The following figure is an example of C1711 WLAN signal measurement on the spectrum analyzer.

  • Page 86: General Gps Debug

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.7 General GPS debug 3.7.1 GPS path and test points How GPS signal travels between components on GM2 PCB is explained in this section. DC voltage level and clock are mentioned in the section as well.
  • Page 87 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual...
  • Page 88 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● GPS test points...

  • Page 89: Gps Debug

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3.7.2 GPS debug The flow charts of GPS debug are shown below.
  • Page 90 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual...
  • Page 91 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual...
  • Page 92 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual...
  • Page 93 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual The first GPS debug process is GPS DC debug. The purpose of this process is to ensure that GPS chip (U2001) is supplied proper voltage levels and reference clocks. Besides, digital data transmission between GPS chip and CPLD is another important checking point.
  • Page 94 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual b. Execute GPSinformation_en debug tool and press “Start GPS” showed on the debug tool. The usage of debug tool and its related parameters are prescribed in the appendix. c.
  • Page 95 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual “Start GPS” or “Close GPS”. The voltage level corresponding to GPS status, “Start GPS” or “Close GPS”, is listed in the following table. U2001 needs to be replaced if no pulse signal or proper voltage is measured on R2021 or R2023 respectively.
  • Page 96 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual f. Use a multimeter to check output voltage level from CMOS (Q2001). The voltage level on R1702 changes when “Start GPS” or “Close GPS”. The voltage level corresponding to GPS status, “Start GPS”...
  • Page 97 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Otherwise, replace GPS chip (U2001) under the condition of R2022 at high voltage level but still failure in download firmware. The last GPS debug process is GPS RF performance test. The purpose of this debug process is to find out where the problem is on GPS RF path.
  • Page 98 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● C2010 Check whether RF Connector (CON2002) is good or not. CON2002 needs to be reworked if improper power, no power or lower power than that on the golden sample, is measured on C2010. The following figure is an example of C2010 signal measurement on the spectrum analyzer.
  • Page 99 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual ● R2005 Check whether LNA (U2007) is good or not. U2007 needs to be reworked if improper power, no power or lower power than that on the golden sample, is measured on R2005. The following figure is an example of R2005 signal measurement on the spectrum analyzer.
  • Page 100 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual be reworked if improper power, no power or lower power than that on the golden sample, is measured on R2027. The following figure is an example of R2027 signal measurement on the spectrum analyzer.

  • Page 101: Appendix

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Appendix 1. Bluetooth Debug Tool Operation Step1: Install “GM2_BT_TEST.CAB” on GSM and then generate “CSR_BT_TEST” debug tool in “My Documents” folder. Execute CSR_BT_TEST. Step2: Click “Turn On Test Mode” in the “Test Mode” sheet.
  • Page 102 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Step3: Enter frequency and power level in the “TxStart” sheet. Step4: Press “Start” and RF signal is transmitted.
  • Page 103 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Step5: Click “Re-Test” to stop transmit RF power. Step6: Click “Close AP” to close debug tool.

  • Page 104: Wlan Debug Tool Operation

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 2. WLAN Debug Tool Operation Step1: Install ”EnableWiFiMFG_NoBCA.CAB” on GM2 Step2: After installing WLAN debug tool, reboot GM2...
  • Page 105 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Step3: Click “Wi-Fi” once time in the “Wireless Manager” Step4: Execute “MfgUtility_NoBCA” debug tool in “Programs” folder.
  • Page 106 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Step5: Choose “Info” and then press “Select” Step6: Check the version of debug tool like below and then press “Exit”...
  • Page 107 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Step7: Choose “Tx” and then press “Select” Step8: Choose WLAN parameters like below and then press “Start” in the “Menu” to transmit RF power.
  • Page 108 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Step9: Choose “Stop” in the “Menu” to stop RF signal and then press “Exit” to close WLAN debug tool.

  • Page 109: Gps Debug Tool Operation - Gpsinformation_En

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 3. GPS Debug Tool Operation – GPSinformation_en Step1: Execute “GPSinformation_en” on GM2 Step2: Choose GPS parameters like below. Step3: Press “Start GPS” to enter GPS test mode and enable all GPS...
  • Page 110 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual voltage supplies and clocks. Step4: Press “Close GPS” to disable GPS test mode.

  • Page 111: Gps Firmware Download Tool Operation - Gpsdl

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 4. GPS Firmware Download Tool Operation – GPSDL Step1: Choose “GPS_AP” folder Step2: Execute “GPSDL” to download GPS firmware.
  • Page 112 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Step3: This screen shows that GPS firmware is downloading. Step4: “GPSDL” exits automatically when firmware download completing.

  • Page 113: Gps Debug Tool Operation - Sirfdemo

    華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual 5. GPS Debug Tool Operation – SiRFDemo Step1: Execute “SiRFDemo” on GM2 Step2: Press “ok”...
  • Page 114 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Step3: Choose “GSW3” and then press “ok” Step4: Choose GPS parameters like below...
  • Page 115 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Step5: Press “Connect” and wait for connetion. Step6: Press “Done” after successful connection. Step7: Choose “Signal” page.
  • Page 116 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Step7: Satellite number and C/N value show up when GPS signal is received by GPS chip successfully. Step8: Choose “Setup” menu to exit SiRFDemo.
  • Page 117 華 碩 電 腦 華 碩 電 腦 GTC ■ Service Manual Step9: Press “Exit”...

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